The U.S. dollar racked up its biggest rise in more than two weeks in 2017’s first full day of European trading on Tuesday, as dealers and investors in London returned to push the greenback close to December’s long-term highs. One of January’s big question-marks, China’s yuan, was proving more stable in its more freely traded offshore markets, a bullish survey of manufacturing purchasing managers helping it 0.1 percent higher and also supporting the Australian dollar.